In a live televised address, Mr Rouhani branded the sanctions against Ayatollah Ali Khamenei and other senior officials, including Iran’s foreign minister Mohammad Javad Zarif, as “outrageous and idiotic”.

An exasperated Mr Rouhani said: “You sanction the foreign minister simultaneously with a request for talks?”

That's not exactly the way he said it. ناتوانی ذهنی and معلولیت ذهنی are the words he uses which more or less translate to intellectual (or mental) incapacity (or disability). Sure, it means the same thing, but he didn't use that kind of language. عقب‌ماندگی This is the word that means retardation in Farsi. It's the same in Iran as it is here as far as the politeness (and PCness) of these specific words goes. .btw I'm a native speaker

Pretty much this. Trump IS a fucking idiot, but given the actions of Iran over the last couple of weeks, I'm not sure what they expected. And they were already refusing any dialogue before these sanctions.